JP3457260B2 - Disk drive head suspension assembly - Google Patents
Disk drive head suspension assemblyInfo
- Publication number
- JP3457260B2 JP3457260B2 JP2000160650A JP2000160650A JP3457260B2 JP 3457260 B2 JP3457260 B2 JP 3457260B2 JP 2000160650 A JP2000160650 A JP 2000160650A JP 2000160650 A JP2000160650 A JP 2000160650A JP 3457260 B2 JP3457260 B2 JP 3457260B2
- Authority
- JP
- Japan
- Prior art keywords
- coil
- magnetic member
- suspension assembly
- disk drive
- slider
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B21/00—Head arrangements not specific to the method of recording or reproducing
- G11B21/02—Driving or moving of heads
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
- G11B5/54—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head into or out of its operative position or across tracks
- G11B5/55—Track change, selection or acquisition by displacement of the head
- G11B5/5521—Track change, selection or acquisition by displacement of the head across disk tracks
- G11B5/5552—Track change, selection or acquisition by displacement of the head across disk tracks using fine positioning means for track acquisition separate from the coarse (e.g. track changing) positioning means
Landscapes
- Supporting Of Heads In Record-Carrier Devices (AREA)
- Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)
- Moving Of The Head To Find And Align With The Track (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は記録媒体に情報を記
録／再生するためのヘッドを支持して移すディスクドラ
イブのヘッドサスペンション組立体に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a head suspension assembly for a disk drive that supports and transfers a head for recording / reproducing information on / from a recording medium.
【０００２】[0002]
【従来の技術】一般的に、ハードディスクドライブＨＤ
Ｄのようなディスクドライブは、ハウジング内に回転自
在に設けられたディスクのトラックに情報を記録したり
記録された情報を再生するためのヘッドを支持するヘッ
ドサスペンション組立体を具備する。2. Description of the Related Art Generally, a hard disk drive HD
A disk drive such as D includes a head suspension assembly that supports a head for recording information on a track of a disk rotatably provided in a housing and reproducing the recorded information.
【０００３】このようなヘッドサスペンション組立体
は、ボイスコイルモータＶＣＭにより回動するアクチュ
エータアームの端部に支持されたサスペンション、即
ち、ロードビームと、前記サスペンションの端部に連結
されたジンバルと、このジンバルに支持され前記ヘッド
を有するスライダーとを具備する。前記サスペンション
はボイスコイルモータの駆動力によりアクチュエータア
ームと共に回動しながらスライダーをディスクの半径方
向に希望する位置まで移す。スライダーに支持されたま
ま移るヘッドはディスクに備えられた多数のトラック
中、情報を記録または再生する情報が記録された所定ト
ラックに対応するように位置されるべきである。ヘッド
のトラックキングに対する精度は記録／再生される情報
の信頼性に重要な役割をする。Such a head suspension assembly includes a suspension supported at the end of an actuator arm which is rotated by a voice coil motor VCM, that is, a load beam, and a gimbal connected to the end of the suspension. A slider supported by a gimbal and having the head. The suspension moves the slider in the radial direction of the disk to a desired position while rotating together with the actuator arm by the driving force of the voice coil motor. The moving head, which is supported by the slider, should be positioned so as to correspond to a predetermined track on which information for recording or reproducing information is recorded among a large number of tracks provided on the disk. The accuracy of the head for tracking plays an important role in the reliability of the information recorded / reproduced.
【０００４】一方、最近はディスクドライブの小型化と
記憶容量の増大を共に追求する勢いである。この勢いに
従ってディスクのトラック密度(ＴＰＩ;Trak Per Inch)
が増えているし、現在の技術の勢いでは近い内に約２
５，０００ＴＰＩ水準の記録媒体が市場に商用化される
ことと予想される。このようにＴＰＩが増え、ディスク
の回転数が増えることによって、ヘッドの位置を精密に
制御し難い。このような問題点を解決するために別の精
巧なトラッキングモーターやマイクロアクチュエータを
具備したヘッドサスペンション組立体が提案され、その
一例が図１に示されている。On the other hand, recently, there is a tendency to pursue both miniaturization of disk drive and increase of storage capacity. According to this momentum, the track density of the disc (TPI; Trak Per Inch)
And the current technology momentum is about 2
It is expected that a recording medium of 5,000 TPI level will be commercialized in the market. As the TPI increases and the disk rotation speed increases, it is difficult to precisely control the position of the head. In order to solve such a problem, another head suspension assembly equipped with another elaborate tracking motor and microactuator has been proposed, an example of which is shown in FIG.
【０００５】図１はＵＳＰ５，８５７，３４７に開示さ
れたヘッドサスペンション組立体であって、終端部１１
と中央端部１３に亙って形成された水平部１５を有し、
アクチュエータアーム（図示せず）の端部に支持される
ロードビーム１０を具備する。このロードビーム１０の
終端部１１にはジンバル１７が備えられている。ジンバ
ル１７には記録／再生用ヘッド（図示せず）が備わった
スライダー（図示せず）が支持される。また、ロードビ
ーム１０の終端部１１と中央端部１３は連結部３０によ
り弾力的に連結されている。連結部３０の周囲には第１
コイルユニット２１と第２コイルユニット２３を有する
マイクロアクチュエータ２０が設けられている。FIG. 1 shows a head suspension assembly disclosed in US Pat. No. 5,857,347.
And a horizontal portion 15 formed over the central end portion 13,
It comprises a load beam 10 supported on the end of an actuator arm (not shown). A gimbal 17 is provided at a terminal portion 11 of the load beam 10. A slider (not shown) having a recording / reproducing head (not shown) is supported on the gimbal 17. Further, the terminal portion 11 and the central end portion 13 of the load beam 10 are elastically connected by the connecting portion 30. There is a first
A microactuator 20 having a coil unit 21 and a second coil unit 23 is provided.
【０００６】前記各コイルユニット２１、２３のコイル
２２、２４に電流を印加すれば、コイルユニット２１、
２３間では相互間の電磁気力による垂直反発力が発生す
る。この垂直反発力により各コイルユニット２１、２３
は相互上下に移動し、連結部３０の垂直レール部３１、
３３は水平方向に曲がる。従って、終端部１１が中央端
部１３に対して水平方向、即ち、トラック方向に回動す
ることによってスライダーが微細調整される。When current is applied to the coils 22 and 24 of the coil units 21 and 23, the coil units 21 and
A vertical repulsive force due to the electromagnetic force is generated between the two. By this vertical repulsive force, each coil unit 21, 23
Move up and down relative to each other, and the vertical rail portion 31 of the connecting portion 30,
33 bends horizontally. Therefore, the slider is finely adjusted by rotating the end portion 11 with respect to the central end portion 13 in the horizontal direction, that is, in the track direction.
【０００７】ところが、前記のような構成の従来のヘッ
ドサスペンション組立体は、部品数が多くてロードビー
ムの構造が複雑なために実際適用し難く高コストがかか
る。また、スライダーを含むロードビームを駆動するた
めには強い駆動力が必要である。これに対して、コイル
ユニット間に発生する垂直反発力を連結部を通じて水平
方向に転換する過程で多くの動力が失われる。However, since the conventional head suspension assembly having the above-described structure has many components and the load beam has a complicated structure, it is difficult to apply and the cost is high. In addition, a strong driving force is required to drive the load beam including the slider. On the other hand, much power is lost in the process of converting the vertical repulsive force generated between the coil units to the horizontal direction through the connecting portion.
【０００８】[0008]
【発明が解決しようとする課題】本発明の目的は、前記
のような問題点を解決するために創案されたものであっ
て、ロードビームに対してスライダーを回動できるよう
に構造が改善されたディスクドライブのヘッドサスペン
ション組立体を提供することである。SUMMARY OF THE INVENTION An object of the present invention is to solve the above problems and to improve the structure so that the slider can be rotated with respect to the load beam. Another object of the present invention is to provide a head suspension assembly for a disk drive.
【０００９】[0009]
【課題を解決するための手段】前記目的を達成するため
の本発明に係るディスクドライブのヘッドサスペンショ
ン組立体は、ディスクのトラックを追従するトラック方
向に回動可能なアクチュエータアームの端部に結合され
たロードビームと、前記ロードビーム端部に支持され、
前記ディスクにデータを記録／再生するヘッドを有する
スライダーと、前記ロードビームと前記スライダーの各
々に設けられる第１及び第２磁性部材を具備し、前記磁
性部材が相互間の電磁気力により姿勢変換されることに
よって前記スライダーを前記ロードビームに対して微細
回動させるマイクロアクチュエータと、前記第１磁性部
材と前記第２磁性部材を弾力的に連結するための連結手
段とを含むことを特徴とする。To achieve the above object, a head suspension assembly for a disk drive according to the present invention is connected to an end of an actuator arm which can follow a track of a disk and is rotatable in a track direction. And a load beam supported on the end of the load beam,
A slider having a head for recording / reproducing data on / from the disk, and first and second magnetic members provided on each of the load beam and the slider, the postures of the magnetic members being changed by mutual electromagnetic force. A microactuator for finely rotating the slider with respect to the load beam, and a connecting means for elastically connecting the first magnetic member and the second magnetic member.
【００１０】ここで、前記第１磁性部材は、前記ロード
ビーム端部に支持された第１コイルベースと、前記第１
コイルベースの下面に設けられ駆動時磁場を形成する一
対の第１コイルとを含み、前記第２磁性部材は、前記ス
ライダーの上面に前記第１コイルベースに対応するよう
に設けられた第２コイルベースと、前記第２コイルベー
スの上面に前記第１コイルに対応するように設けられた
第２コイルとを含むことが望ましい。Here, the first magnetic member includes a first coil base supported at an end of the load beam and the first magnetic base.
A second coil that is provided on the lower surface of the coil base and that forms a magnetic field during driving; and the second magnetic member is provided on the upper surface of the slider so as to correspond to the first coil base. It is desirable to include a base and a second coil provided on the upper surface of the second coil base so as to correspond to the first coil.
【００１１】また、前記一対の第１コイルは、前記トラ
ック方向に交差する前記スライダー上の所定中心線を基
準として左右に各々円形で設けられ、電流印加時前記ス
ライダー面に垂直方向に誘導磁場が形成されるようにな
ったことが望ましい。また、前記第２コイルは、前記ト
ラック方向に交差する前記スライダー上の所定中心線を
基準として左右有効コイル部分で電磁気力が発生するよ
うに前記第２コイルベース上面に長方形に巻線されたこ
とが望ましい。また、前記第１コイルベースの下面に
は、前記第１コイルを前記第２コイルに所定間隔離隔す
るように収容するための引込部が引込形成されたことが
望ましい。The pair of first coils are provided in a circular shape on the left and right with reference to a predetermined center line on the slider intersecting the track direction, and when an electric current is applied, an induction magnetic field is generated in a direction perpendicular to the slider surface. It is desirable that it is formed. Further, the second coil is wound in a rectangular shape on the upper surface of the second coil base such that an electromagnetic force is generated in the left and right effective coil portions with reference to a predetermined center line on the slider intersecting with the track direction. Is desirable. In addition, it is preferable that a retracting portion is housed in the lower surface of the first coil base to accommodate the first coil in the second coil so as to be separated from the second coil by a predetermined distance.
【００１２】また、前記連結手段は、前記第１磁性部材
の下側に設けられ、前記第２磁性部材を動き可能に収容
する貫通孔が形成された連結板と、前記貫通孔の内側面
と前記第２磁性部材の外側面を弾力的に連結する弾性部
材とを含むことが望ましい。また、前記弾性部材は、前
記トラック方向に交差する前記スライダー上の所定中心
線を基準として相互対称に備えられるヘアピン状スプリ
ングを含むことが望ましい。The connecting means is provided below the first magnetic member and has a through hole for movably accommodating the second magnetic member, and an inner surface of the through hole. It is desirable to include an elastic member that elastically connects the outer surface of the second magnetic member. Further, it is preferable that the elastic member includes a hairpin-shaped spring provided symmetrically with respect to a predetermined center line on the slider intersecting with the track direction.
【００１３】また、前記弾性部材は、前記磁性部材間の
電磁気力により曲がりながら前記第２磁性部材を前記第
１磁性部材に対して回動させるように、前記第２磁性部
材の前端部または後端部と前記貫通孔の内側面に連結さ
れたトーションバーを含むことが望ましい。また、前記
連結板と前記弾性部材は、前記第２磁性部材と一体に形
成されたことが望ましい。また、前記第１磁性部材は、
前記ロードビーム端部に支持され、その下面に引込形成
された引込部を有する磁石ベースと、前記磁石ベースの
引込部に着磁方向が反対に設けられた一対の磁石とを含
むことが望ましい。Further, the elastic member is bent by an electromagnetic force between the magnetic members so that the second magnetic member is rotated with respect to the first magnetic member while being bent. It is desirable to include a torsion bar connected to the end and the inner surface of the through hole. Further, it is preferable that the connecting plate and the elastic member are integrally formed with the second magnetic member. In addition, the first magnetic member,
It is desirable to include a magnet base supported by the end portion of the load beam and having a pull-in portion formed in the lower surface thereof, and a pair of magnets provided in the pull-in portion of the magnet base in opposite magnetization directions.
【００１４】[0014]
【発明の実施の形態】以下、添付した図面を参照して本
発明の望ましい実施形態に対してより詳細に説明する。
図２は、本発明の実施形態に係るディスクドライブのヘ
ッドサスペンション組立体の分離斜視図で、図３は図２
に示したヘッドサスペンションの側面図で、図４は図２
の正面図である。BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings.
2 is an exploded perspective view of a head suspension assembly of a disk drive according to an embodiment of the present invention, and FIG.
2 is a side view of the head suspension shown in FIG.
FIG.
【００１５】図２乃至図４に示したヘッドサスペンショ
ン組立体は、ディスクＤのトラックに情報を記録／再生
するためのヘッド（図示せず）を支持したまま前記トラ
ックを横切るトラック方向Ａに微細に移すためのもので
ある。このようなヘッドサスペンション組立体は、アク
チュエータアーム４０の端部に結合されたロードビーム
４１と、前記ヘッドを支持したままディスクＤの上を移
動するようにロードビーム４１の端部に支持されるスラ
イダー４３と、スライダー４５とロードビーム４１との
間に設けられるマイクロアクチュエータ５０及び連結手
段とを具備する。The head suspension assembly shown in FIGS. 2 to 4 finely moves in the track direction A across a track of the disk D while supporting a head (not shown) for recording / reproducing information on the track. It is for transferring. Such a head suspension assembly includes a load beam 41 coupled to an end of an actuator arm 40 and a slider supported at the end of the load beam 41 so as to move on the disk D while supporting the head. 43, a microactuator 50 provided between the slider 45 and the load beam 41, and a connecting means.
【００１６】前記マイクロアクチュエータ５０は、ロー
ドビーム４１の端部に設けられる第１磁性部材６０と、
前記第１磁性部材６０と所定間隔を維持するようにスラ
イダー４３に設けられる第２磁性部材７０とを具備す
る。各磁性部材６０、７０は電流印加時相互間に作用す
る電磁気力により姿勢変換されることによって、スライ
ダー４３をロードビーム４１に対して微細回動させる。The microactuator 50 includes a first magnetic member 60 provided at an end of the load beam 41,
The first magnetic member 60 and the second magnetic member 70 provided on the slider 43 so as to maintain a predetermined distance are provided. The postures of the magnetic members 60 and 70 are changed by an electromagnetic force acting between them when a current is applied, so that the slider 43 is finely rotated with respect to the load beam 41.
【００１７】前記第１磁性部材６０は、ロードビーム４
１の端部に支持された第１コイルベース６１と、この第
１コイルベース６１の下面に設けられる一対の第１コイ
ル６３を具備する。前記第１コイルベース６１は、下面
に前記第１コイル６３を収容して支持するための引込部
６１ａが所定深度で形成される。前記一対の第１コイル
６３は、スライダー４３上でトラック方向Ａに対して交
差する所定中心線Ｃを基準として左右に対称に円形で設
けられる。このように設けられた第１コイル６３に電流
を印加すればスライダー４３面に垂直方向に誘導磁場が
形成される。第１コイル６３は前記引込部６１ａ内にコ
ーティング、メッキ、または巻線されることにより設け
られうる。The first magnetic member 60 includes the load beam 4
The first coil base 61 is supported at one end, and the pair of first coils 63 is provided on the lower surface of the first coil base 61. The first coil base 61 has a lower surface formed with a retracting portion 61a for accommodating and supporting the first coil 63 at a predetermined depth. The pair of first coils 63 are symmetrically provided in a circular shape in the left-right direction on the slider 43 with a predetermined center line C intersecting with the track direction A as a reference. When a current is applied to the first coil 63 provided in this way, an induction magnetic field is formed in the direction perpendicular to the slider 43 surface. The first coil 63 may be provided by coating, plating, or winding inside the lead-in portion 61a.
【００１８】前記第２磁性部材７０は、スライダー４３
の上面に第１コイルベース６１に対応するように設けら
れた第２コイルベース７１と、この第２コイルベース７
１上に設けられた第２コイル７３とを具備する。前記第
２コイル７３は前記中心線Ｃを基準として両側有効コイ
ル部分に磁気力が発生するように長方形で設けられる。
この第２コイル７３は第２コイルベース７１の上面にコ
ーティング、メッキまたは巻線されることにより設けら
れうる。The second magnetic member 70 has a slider 43.
A second coil base 71 provided on the upper surface of the first coil base 61 so as to correspond to the first coil base 61, and the second coil base 7
2 and a second coil 73 provided on the first coil. The second coil 73 is provided in a rectangular shape so that a magnetic force is generated in the effective coil portions on both sides of the center line C.
The second coil 73 may be provided by coating, plating or winding on the upper surface of the second coil base 71.
【００１９】前記連結手段は、第１コイルベース６１の
下側に固着される連結板８１と、この連結板８１と第２
コイルベース７１を弾力的に連結する弾性部材８３とを
具備する。前記連結板８１には第２コイルベース７１を
動き可能に収容する貫通孔８１ａが形成される。前記弾
性部材８３は貫通孔８１ａの内側面と第２コイルベース
７１の外側面の各々に連結される。本実施形態で弾性部
材８３は、具体的に第２コイルベース７１の前端部と貫
通孔８１ａの内側面の各々に弾性変形可能に連結される
トーションバーであることが望ましい。また、弾性部材
８３は第２コイルベース７１と一体に形成される。前記
弾性部材８３は外力により弾性変形されることによっ
て、第１コイルベース６１に対して第２コイルベース７
１が中心線Ｃを基準として微細回動するようにする。The connecting means includes a connecting plate 81 fixed to the lower side of the first coil base 61, the connecting plate 81 and the second connecting plate 81.
The elastic member 83 elastically connects the coil base 71. The connection plate 81 has a through hole 81a for movably housing the second coil base 71. The elastic member 83 is connected to each of the inner surface of the through hole 81a and the outer surface of the second coil base 71. In this embodiment, the elastic member 83 is preferably a torsion bar that is elastically deformably connected to each of the front end of the second coil base 71 and the inner surface of the through hole 81a. The elastic member 83 is formed integrally with the second coil base 71. The elastic member 83 is elastically deformed by an external force, so that the second coil base 7 is moved relative to the first coil base 61.
1 makes fine rotation with the center line C as a reference.
【００２０】前記構成を有する本発明の実施形態に係る
ディスクドライブのヘッドサスペンション組立体の動作
を、図２と図５及び図６を参照して説明すれば次の通り
である。第１コイル６３の各々に反対方向の電流を印加
すれば、誘導磁場がスライダー４３の面に垂直方向に形
成される。このように、第１コイル６３による誘導磁場
が形成された状態で第２コイル７３に電流を印加すれ
ば、中心線Ｃを基準とした第２コイル７３の両側有効コ
イル部分ではフレーミングの左手法則による磁気力が発
生する。発生した磁気力により第２コイルベース７１
は、弾性部材８３を弾性変形させながら中心線Ｃを基準
としていずれか一方に微細移動される。従って、第２コ
イルベース７１に連結されたスライダー４３がディスク
Ｄのトラック方向Ａに微細回動できる。即ち、第１コイ
ルベース６１はロードビーム４１に固定されて姿勢固定
され、連結板８１は第１コイルベース６１に付着されて
姿勢固定された反面、スライダー４３は第２コイルベー
ス７１と共に磁気力により回動することである。The operation of the head suspension assembly of the disk drive having the above structure according to the embodiment of the present invention will be described below with reference to FIGS. 2, 5, and 6. When a current in the opposite direction is applied to each of the first coils 63, an induced magnetic field is formed in the direction perpendicular to the surface of the slider 43. In this way, if a current is applied to the second coil 73 in a state where the induced magnetic field is formed by the first coil 63, the effective coil portions on both sides of the second coil 73 based on the center line C are based on the left framing method rule. Magnetic force is generated. The second coil base 71 is generated by the generated magnetic force.
Is finely moved to either one of the center lines C while elastically deforming the elastic member 83. Therefore, the slider 43 connected to the second coil base 71 can be finely rotated in the track direction A of the disk D. That is, while the first coil base 61 is fixed to the load beam 41 and its posture is fixed, and the connecting plate 81 is attached to the first coil base 61 and its posture is fixed, the slider 43 is magnetically attracted together with the second coil base 71. It is to rotate.
【００２１】前述したように、フレーミングの左手法則
による磁気力を用いてスライダー４３を回動させること
によって、力の方向を変える必要がない。従って、従来
の技術に比べて大きい動力を発生させることができる。
また、組立体の構造が簡単なのでＭＥＭＳ(Micro-elect
romecanical system)製作技術により実際製作と具現が
容易である。As described above, it is not necessary to change the direction of the force by rotating the slider 43 using the magnetic force according to the framing left-hand rule. Therefore, it is possible to generate a large amount of power as compared with the conventional technique.
Also, since the structure of the assembly is simple, MEMS (Micro-elect
The romecanical system) production technology makes it easy to actually produce and implement.
【００２２】一方、前記第１磁性部材６０の他の代案と
して図７に示したように、ロードビーム４１の端部に設
けられた磁石ベース１６１と、一対の磁石１６３よりな
る第１磁性部材１６０が備えられうる。前記磁石ベース
１６１の下面には一対の磁石１６３を収容するための引
込部１６２が引込形成される。前記一対の磁石１６３は
上下にＳ極とＮ極を有し、その着磁方向がお互い反対で
かつ反対方向に磁気力を及ぼし合うように各々設けられ
る。このような構造の第１磁性部材１６０は、図２の第
２磁性部材７０と一対を成してスライダー４３を微細回
動できるマイクロアクチュエータを構成する。On the other hand, as another alternative of the first magnetic member 60, as shown in FIG. 7, a first magnetic member 160 including a magnet base 161 provided at the end of the load beam 41 and a pair of magnets 163. Can be provided. A retraction part 162 for accommodating the pair of magnets 163 is formed on the lower surface of the magnet base 161. The pair of magnets 163 have an S pole and an N pole on the upper and lower sides, and are provided so that their magnetizing directions are opposite to each other and exert a magnetic force in the opposite directions. The first magnetic member 160 having such a structure forms a pair with the second magnetic member 70 of FIG. 2 to form a microactuator capable of finely rotating the slider 43.
【００２３】また、前記連結手段の他の例として、図８
に示したように連結板８１の貫通孔８１ａの内側面と第
２コイルベース７１の外側面を弾力的に連結する一対の
弾性部材８４が備えられうる。前記弾性部材８４は中心
線Ｃの左右に対称に第２コイルベース７１の左右側面に
連結される。また、弾性部材８４は所定形状で連続して
曲がったヘアピン状スプリングであることが望ましい。
従って、図９に仮想線で示したように、磁気力により第
２コイルベース７１が移動する時弾性部材８４中一つは
圧縮され残りは引張されることによって、スライダー４
３の微細移動を可能に支持する。また、示されなかった
が、弾性部材８４はスライダー４３が移動する時、同時
に引張されるように中心線Ｃ上に設けられても構わな
い。即ち、弾性部材８４は第２コイルベース７１の前後
端部の各々に連結されうる。As another example of the connecting means, FIG.
As shown in FIG. 7, a pair of elastic members 84 that elastically connect the inner surface of the through hole 81a of the connecting plate 81 and the outer surface of the second coil base 71 may be provided. The elastic member 84 is connected to the left and right side surfaces of the second coil base 71 symmetrically to the left and right of the center line C. Further, it is desirable that the elastic member 84 is a hairpin-shaped spring that is continuously bent in a predetermined shape.
Therefore, as indicated by the phantom line in FIG. 9, when the second coil base 71 moves by the magnetic force, one of the elastic members 84 is compressed and the rest is pulled, so that the slider 4 is moved.
3 enables fine movement. Although not shown, the elastic member 84 may be provided on the center line C so as to be simultaneously pulled when the slider 43 moves. That is, the elastic member 84 may be connected to each of the front and rear ends of the second coil base 71.
【００２４】[0024]
【発明の効果】以上、説明したように、本発明に係るデ
ィスクドライブのヘッドサスペンション組立体は、構造
が簡単で小型で容易に製作できる。また、従来に比べて
大きい動力を得ることができて電力消費を省きながらス
ライダーを微細調整できる。一方、簡単な構造により精
密駆動が可能な本発明に係るディスクドライブのヘッド
サスペンション組立体は、既存のＨＤＤ装置の大部分と
光ヘッドのような光学技術を接続して最近活発な研究が
進行中のＮＦＲＤ(Near Field Recording Drive)に採用
されて、既存のＨＤＤに比べて高い面密度を有する光ヘ
ッドを精密に制御するのに有用に使われうる。また、レ
ーザースキャナーやプリンタに採用されて光学装置の駆
動ミラーを微細に調整するように使われうる。As described above, the head suspension assembly of the disk drive according to the present invention has a simple structure, is small in size, and can be easily manufactured. In addition, it is possible to obtain a larger amount of power as compared with the related art, and it is possible to finely adjust the slider while saving power consumption. Meanwhile, the head suspension assembly of a disk drive according to the present invention, which can be precisely driven by a simple structure, has been actively researched recently by connecting most of the existing HDD devices and optical technology such as an optical head. NFRD (Near Field Recording Drive) of the present invention, and can be effectively used for precisely controlling an optical head having a higher areal density than existing HDDs. Also, it may be used in a laser scanner or a printer to finely adjust a driving mirror of an optical device.
【図１】 従来のディスクドライブのヘッドサスペンシ
ョン組立体の概略的な斜視図である。FIG. 1 is a schematic perspective view of a head suspension assembly of a conventional disk drive.
【図２】 本発明の実施形態に係るディスクドライブの
ヘッドサスペンション組立体の分離斜視図である。FIG. 2 is an exploded perspective view of a head suspension assembly of a disk drive according to an exemplary embodiment of the present invention.
【図３】 図２に示したヘッドサスペンション組立体の
側面図である。3 is a side view of the head suspension assembly shown in FIG. 2. FIG.
【図４】 図２に示したヘッドサスペンションの正面図
である。FIG. 4 is a front view of the head suspension shown in FIG.
【図５】 本発明の実施形態に係るディスクドライブの
ヘッドサスペンション組立体の動作を説明するための平
面図である。FIG. 5 is a plan view for explaining the operation of the head suspension assembly of the disk drive according to the embodiment of the present invention.
【図６】 本発明の実施形態に係るディスクドライブの
ヘッドサスペンション組立体の動作を説明するための平
面図である。FIG. 6 is a plan view for explaining the operation of the head suspension assembly of the disk drive according to the embodiment of the present invention.
【図７】 本発明の他の実施形態に係るディスクドライ
ブのヘッドサスペンション組立体の要部を示す斜視図で
ある。FIG. 7 is a perspective view showing a main part of a head suspension assembly of a disk drive according to another embodiment of the present invention.
【図８】 本発明のさらに他の実施形態に係るディスク
ドライブのヘッドサスペンション組立体の要部を示す斜
視図である。FIG. 8 is a perspective view showing a main part of a head suspension assembly of a disk drive according to still another embodiment of the present invention.
【図９】 図８に示したヘッドサスペンションの動作を
説明するための平面図。9 is a plan view for explaining the operation of the head suspension shown in FIG.
４０ アクチュエータアーム ４１ ロードビーム ４３、４５ スライダー ５０ マイクロアクチュエータ ６０ 第１磁性部材 ６１ 第１コイルベース ６１ａ 引込部 ６３ 第１コイル ７０ 第２磁性部材 ７１ 第２コイルベース ７３ 第２コイル ８１ 連結板 ８１ａ 貫通孔 ８３ 弾性部材 Ｃ 中心線 Ｄ ディスク 40 actuator arm 41 Road Beam 43, 45 slider 50 micro actuator 60 First Magnetic Member 61 1st coil base 61a lead-in section 63 First coil 70 Second Magnetic Member 71 Second coil base 73 Second coil 81 Connection plate 81a through hole 83 Elastic member C center line D disk
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平10−134534（ＪＰ，Ａ) 特開 平６−70529（ＪＰ，Ａ) 特開 平３−293955（ＪＰ，Ａ) 特開 平９−161425（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) G11B 21/10 G11B 21/16 - 21/26 G11B 5/56 - 5/60 ─────────────────────────────────────────────────── --- Continuation of the front page (56) References JP-A-10-134534 (JP, A) JP-A-6-70529 (JP, A) JP-A-3-293955 (JP, A) JP-A-9- 161425 (JP, A) (58) Fields surveyed (Int.Cl. 7 , DB name) G11B 21/10 G11B 21/16-21/26 G11B 5/56-5/60
Claims (8)
方向に回動可能なアクチュエータアームの端部に結合さ
れたロードビームと、 前記ロードビーム端部に支持され、前記ディスクにデー
タを記録／再生するヘッドを有するスライダーと、 前記ロードビームと前記スライダーの各々に設けられる
第１及び第２磁性部材を具備し、前記磁性部材が相互間
の電磁気力により姿勢変換されることによって前記スラ
イダーを前記ロードビームに対して微細回動させるマイ
クロアクチュエータと、 前記第１磁性部材と前記第２磁性部材を弾力的に連結す
るための連結手段とを含み、 前記第１磁性部材は、 前記ロードビーム端部に支持された第１コイルベース
と、 前記第１コイルベースの下面に設けられ駆動時磁場を形
成する一対の第１コイルとを含み、 前記第２磁性部材は、 前記スライダーの上面に前記第１コイルベースに対応す
るように設けられた第２コイルベースと、 前記第２コイルベースの上面に前記第１コイルに対応す
るように設けられた第２コイルとを含むことを特徴とす
るディスクドライブのヘッドサスペンション組立体。1. A load beam coupled to an end of an actuator arm which can follow a track of a disc and is rotatable in a track direction, and a head which is supported by the end of the load beam and records / reproduces data on / from the disc. And a first and second magnetic member provided on each of the load beam and the slider, and the slider is changed to the load beam by changing the posture of the magnetic member due to mutual electromagnetic force. A microactuator for fine rotation with respect to the first magnetic member; and a connecting means for elastically connecting the first magnetic member and the second magnetic member, the first magnetic member being supported by the load beam end portion. A first coil base, and a pair of first coils provided on the lower surface of the first coil base to form a magnetic field during driving. The second magnetic member may include a second coil base provided on the upper surface of the slider so as to correspond to the first coil base, and an upper surface of the second coil base so as to correspond to the first coil. A head suspension assembly for a disk drive, comprising: a second coil provided.
方向に交差する前記スライダー上の所定中心線を基準と
して左右に各々円形で設けられ、電流印加時前記スライ
ダー面に垂直方向に誘導磁場が形成されるようになった
ことを特徴とする請求項１に記載のディスクドライブの
ヘッドサスペンション組立体。2. The pair of first coils are provided in a circular shape on the left and right with reference to a predetermined center line on the slider intersecting the track direction, and an induced magnetic field is applied in a direction perpendicular to the slider surface when a current is applied. The head suspension assembly of the disk drive according to claim 1, wherein the head suspension assembly is formed.
交差する前記スライダー上の所定中心線を基準として左
右有効コイル部分で電磁気力が発生するように前記第２
コイルベース上面に長方形に巻線されたことを特徴とす
る請求項１に記載のディスクドライブのヘッドサスペン
ション組立体。3. The second coil is configured such that an electromagnetic force is generated in left and right effective coil portions with reference to a predetermined center line on the slider intersecting in the track direction.
2. The head suspension assembly for a disk drive according to claim 1, wherein the upper surface of the coil base is wound in a rectangular shape.
第１コイルを前記第２コイルに所定間隔離隔するように
収容するための引込部が引込形成されたことを特徴とす
る請求項１に記載のディスクドライブのヘッドサスペン
ション組立体。4. The retracting portion for accommodating the first coil in the second coil so as to be separated from the second coil by a predetermined distance is formed on the lower surface of the first coil base. A head suspension assembly for a disk drive as described in.
を動き可能に収容する貫通孔が形成された連結板と、 前記貫通孔の内側面と前記第２磁性部材の外側面を弾力
的に連結する弾性部材とを含むことを特徴とする請求項
１に記載のディスクドライブのヘッドサスペンション組
立体。5. The connecting means is provided below the first magnetic member, and has a through hole for movably accommodating the second magnetic member, and an inner surface of the through hole. The disk drive head suspension assembly of claim 1, further comprising an elastic member that elastically connects the outer surface of the second magnetic member.
心線を基準として相互対称に備えられるヘアピン状スプ
リングを含むことを特徴とする請求項５に記載のディス
クドライブのヘッドサスペンション組立体。6. The disk drive according to claim 5, wherein the elastic member includes hairpin-shaped springs provided symmetrically with respect to a predetermined center line on the slider intersecting the track direction. Head suspension assembly.
磁性部材を前記第１磁性部材に対して回動させるよう
に、前記第２磁性部材の前端部または後端部と前記貫通
孔の内側面に連結されたトーションバーを含むことを特
徴とする請求項５に記載のディスクドライブのヘッドサ
スペンション組立体。7. The elastic member is bent by the electromagnetic force between the magnetic members, and the second member is bent.
A front end portion or a rear end portion of the second magnetic member and a torsion bar connected to an inner surface of the through hole so as to rotate the magnetic member with respect to the first magnetic member. Item 7. A head suspension assembly for a disk drive according to Item 5.
磁性部材と一体に形成されたことを特徴とする請求項５
に記載のディスクドライブのサスペンション組立体。8. The second connecting plate and the elastic member
6. The magnetic member is integrally formed with the magnetic member.
The suspension assembly for the disk drive described in.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR199920180 | 1999-06-02 | ||
| KR1019990020180A KR100601607B1 (en) | 1999-06-02 | 1999-06-02 | Head Suspension Assembly of Disk Drive |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000353368A JP2000353368A (en) | 2000-12-19 |
| JP3457260B2 true JP3457260B2 (en) | 2003-10-14 |
Family
ID=19589368
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000160650A Expired - Fee Related JP3457260B2 (en) | 1999-06-02 | 2000-05-30 | Disk drive head suspension assembly |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US6535360B1 (en) |
| EP (1) | EP1058238B1 (en) |
| JP (1) | JP3457260B2 (en) |
| KR (1) | KR100601607B1 (en) |
| CN (1) | CN1187736C (en) |
| DE (1) | DE60036577T2 (en) |
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| JPH08339644A (en) * | 1995-06-06 | 1996-12-24 | Hewlett Packard Co <Hp> | Disk device with rigid actuator arm structure |
| JP3333367B2 (en) | 1995-12-04 | 2002-10-15 | 富士通株式会社 | Head actuator |
| JPH09180382A (en) * | 1995-12-26 | 1997-07-11 | Tdk Corp | Magnetic disk device |
| JP3653602B2 (en) * | 1996-10-31 | 2005-06-02 | 株式会社日立製作所 | Magnetic disk unit |
| US5901010A (en) * | 1997-02-07 | 1999-05-04 | Cirrus Logic, Inc. | Magnetic disc recording system employing two stage actuators for simultaneous accesses through multiple recording heads |
| US5867347A (en) * | 1997-06-13 | 1999-02-02 | Hutchinson Technology Incorporated | Head suspension with stacked coil microactuator for tracking axis adjustment of a read/write head |
| US6046884A (en) | 1997-07-29 | 2000-04-04 | Seagate Technology, Inc. | Low mass disc drive suspension |
| JPH1153854A (en) | 1997-08-05 | 1999-02-26 | Hitachi Ltd | Head support mechanism and magnetic disc device having provided with the same |
| JPH11180381A (en) * | 1997-12-19 | 1999-07-06 | Ishikawajima Harima Heavy Ind Co Ltd | Friction drag reduction ship |
| US5959808A (en) * | 1997-12-30 | 1999-09-28 | International Business Machines Corporation | Shielded electrostatic microactuators for magnetic-head positioning such devices |
| KR100611958B1 (en) * | 1999-09-29 | 2006-08-11 | 삼성전자주식회사 | Micro Actuator Driving Method and Apparatus and Disc Drive Head Suspension Assembly and Optical Member Driving Apparatus Employing the Same |
| KR100580242B1 (en) * | 1999-10-21 | 2006-05-16 | 삼성전자주식회사 | Micro actuator |
-
1999
- 1999-06-02 KR KR1019990020180A patent/KR100601607B1/en not_active IP Right Cessation
-
2000
- 2000-05-30 JP JP2000160650A patent/JP3457260B2/en not_active Expired - Fee Related
- 2000-05-30 US US09/580,459 patent/US6535360B1/en not_active Expired - Fee Related
- 2000-05-30 EP EP00304575A patent/EP1058238B1/en not_active Expired - Lifetime
- 2000-05-30 DE DE60036577T patent/DE60036577T2/en not_active Expired - Lifetime
- 2000-05-30 CN CNB001177001A patent/CN1187736C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| EP1058238A3 (en) | 2002-01-16 |
| EP1058238B1 (en) | 2007-10-03 |
| JP2000353368A (en) | 2000-12-19 |
| EP1058238A2 (en) | 2000-12-06 |
| DE60036577T2 (en) | 2008-07-03 |
| CN1276594A (en) | 2000-12-13 |
| CN1187736C (en) | 2005-02-02 |
| KR20010001139A (en) | 2001-01-05 |
| US6535360B1 (en) | 2003-03-18 |
| DE60036577D1 (en) | 2007-11-15 |
| KR100601607B1 (en) | 2006-07-14 |
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